Rotary-engine.



H. P. MGGANN.

ROTARY ENGINE.

APPLICATION FILED JULY 1, 1908.

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H. P. MOGANN.

ROTARY ENGINE. APPLICATION FILED JUIIY 1, 1908. I A 912,253. I PatentedFeb. 9, 1909. 2 SHEEN-SHEET 1.

UNITED STATES PATENT OFFICE.

HARRY PAUL MCOAN'N, OF COLUMBUS, OHIO.

ROTARY ENGINE.

Specification of Letters Patent.

' Patented Feb. 9, 19.09.

-Application filed July 1, 1908. Serial No. 441,282.

drawings, which form part of this spec1iication.

This invention is an improvement in rotary engines and has particularreference to that type of rotary engines wherein the pistons revolve inannular chambers concentric to the axis of theshaft to which the pistonsare fastened.

The objects of the invention are: (1)To provide suitable surfacesofcontact for all the revolving parts; these surfaces being of such aform as to be readily adapted to the use of suitable packing strips andrings to prevent leakage of the motive fluid. (2) To construct andarrange the several arts of the engine in such a manner as to alance'the strains due to the pressure of the motive fluid within the workingchambers, thereby eliminating any excessive friction between therevolving and stationary members of the engine. (3) To provide an enginehaving & reci rocating parts, and therefore adapted for high speed, andto have all the rotating members properly balanced. (4) To produce anengine simple in construction, and compact in form, yet permitting theuse of relatively large piston areas; thereby enabling maximum power tobe obtained from each unit in the engine. (5) To provide an engineadapted to the use of any motive fluid, together with suitable cut-otfdevices, whereby the full expansive force of the fluid can be utilized.(6) Toprovide an engine capable of being reversed by simply reversing1the direction of the flow of the motive fluic.

The invention will be clearly understood from the following detaileddescription of the engine illustrated in the accompanying drawings, andthe parts and combination of parts for which protection is desired areset forth in the appended claims.

lirsaid drawings Figu-re 1 is a vertical cross-section of the engine onthe line 1 1, Fig. 2. Fig. 2 is a vertical cross-section of the enginehousing on the line 2 -2, Fig. -l, the rotating members being shown inelevaltion. Fig. 3 is a vertical cross-section'at the line 2-2, Fig. 1,showing the housing and rotating members in sect on. Fig. 4 is aperspective view of the rotary pistons detached. Fig. 5 is a perspectiveview of the stationary core; and Fig. 6 is a perspective view of one ofthe revolving abutments.

The engine asshown compr ses two similar connected units, eachcontalnlng a rotary piston 2 and a co-actin rotary abutment 3; thepistons working in t e lower part 1 of the inclosing casing and theabutments working in the upper part 1 of said casing. While but twounits are shown their number can be varied according to the H. P. it isdesired to derive from the engine.

Extending axially through the lower part 1 of the casing is a shaft 5upon which are mounted three disks 2, a core 4 being loosely strung onthe shaft between it and the disks, which can rotate freely around thecore, and are rigidly supported on and attached to the shaft 5 by onbolted to the outermost 2 as shown.

The pistons 2., 2, are rigidly connected to and between the central andouter disks 2 at diametrically opposite sides of the shaft; and thepistons 2 and disks 2 may be g rmed integrally, if desired, as indicatedin g 4 r The upper part 1 a of the casing is divided by a centralpartition 1 into two chambers. Opposite .the pistons 2., and passingaxially, through these chambers is a shaft 6, journaled in the ends ofthe casing. On shaft 6 within thecasing vare mounted rotary abutments 3,3, one opposite each piston 2. Said abut nents are of such diameter thatthey extend into the part 1 of the .casi and between the disks 2, andcontact the u per side of the core 4, which is reeessed at to contact wih the a ut nts, and said abutments keep the core from rotating with thepistons, and shaft 5.

It will be seen that the space betwe n two adiacent disksfZ/ the wall ofthe casing, the periphery of the adjacent a utment, and the core 4,forms a closed chamber, in which the piston 2 can rotate. To pe mi hepiston p by its related abutme t the abutmeat is recessed a at 3, andthe (shafts 5 and 6 are intergea led by gears 5, 6, so as to rotatesynchronously, so that at the proper time the recess in the abutmentwill plates 5 keyed to the shaft meet the piston, and allows it to assand thus rotate without hindrance. he pairs of pistons and relatedabutments are set about 180 degrees apart, so that one piston andabutment are in effective operation, while the other piston is passingthrough the pocket of its related abutment.

' The pistons 2, 2, are adapted to revolve in the lower half of thecasing as shown, and between said housing and the stationary core 4.This rotary motion is transmitted to the disks 2 and by these throughplates 5 to the gnain shaft 5.

The revolving abutments 3, 3, are adapted to revolve in the upper halfof the casing, as shown, being indirectly connected to the main shaft 5through shaft 6 and gears 6, 5.

.The recesses 3 in the abutments 3 allow the pistons 2, 2, to passthrough the space in the upper half of the casing. After such passage ofthe pistons 2, 2, these revolving abutments 3, 3, are adapted to closeup the ends of the annular working chambers, the walls of which areformed by the casing, stationary core 4, and the disks 2, therebyforming closed chambers on each side of the pistons 2, 2, whichchambersare adapted to receive pressure from a motive fluid or gas on one sideand to exhaust or compress the fluid or gas at the other side.

The stationarycore 4 is ke t from revolving by the revolving a utments 3alternately engaging the depressions 4* on .its surface, therebypreventing its turning.

The function of this stationary core 4 is to provide suitable surfacesof contact for the revolving parts to engage, thereby preventing thepassage of the gases or motive fluid form one chamber to the other. I

The motive fluid can be admitted into the working chambers through ports7 connecting with a valve chamber 7 to which fluid is supplied through apipe 7 from any suit able source. And the fluid can be exhausted fromtheworking chambersthrough ports 8, connecting with a valve chamber 8,communicating with a i e 8 The ports 7 and 8 may be control e by valves7, 8, controlled by suitable; mechanism, not shown, so that the ports[can be opened and closed as desired. By" simply admitting fluid throughports 8, and discharging it.

through ports 7 the direction of rotation of the engine shaft can bereversed.

In operation for, example the motive fluid enters the working chambersthrough the port 7 (Fig. 1) after the foot or rear edge 2 of the piston2 has passed the port. The pressure upon the face of the piston 2 thencauses it to revolve in the direction shown by the arrows until the foot2' passes the port 8 on the opposite side, thereby ermitting the fluidto escape. At this point motive fluid is admitted to the other workingchamber and the piston 2 therein receives pressure on its face, therebykeeping up the movement of both pistons. The fluid 1s exhausted from theforward side 2 of the piston during its movement from the point 7 to thepoint 8.

Having described my inventlon whatI claim as new and desire to secure byLetters Patent thereon is:

1. In combination, in a rotary engine, a casing, a pair of pistonsmounted between disks therein, a main shaft connected to said disks, astationary core surrounding said shaft and extending between said disks,and revolving abutments cooperating with said pistons.

2. In a rotary enigne, the combination of a casing, a main shaft, diskstherein,a plurality of pistons mounted between adjacent disks, astationary core surroundin shaft and extending between said dis rs, an

auxiliary shaft, abutments on said shaft 00-- acting with the pistons,and gearing between said shafts.

3. The combination, in a rotary engine, of a casing, a piston mountedbetween revolving disks, a stationary core having a depression 'in itssurface and extending between said disksand adapted to contact the innerportion of said iston, a shaft extending through said stationary coreand connected to said disks, and a revolving abutment said engagingtherecess in the core and having a I recess to accommodate the-piston.

4. In a rotary engine, the combination of a casing, a pair of pistonstherein mounted between revolving disks, a stationary core, havingdepressions in its surface, between said disks, and extending betweenthe disks and adapted to be contacted by the inner.

portions of said pistons, a shaft extending through said stationary coreand connected to said disks, and a pair of revolving abutments engagingthe recesses in the core and 1 having recesses to accommodate thepistons. 5. n a rotary engine, the combination of a caslng, pistonstherein mounted between revolving disks, a stationary vcore havingsuitable depressions on its surface, and extending between saiddisks'and adapted to contact the inner portion of said pistons, a shaftextending through said stationary core and connected to said disks, andrevolvin abutments engaging the depressionsin said core, and havingrecesses to receive the pistons.

6. In a rotary engine, the combination of a casing, a pair of adjacentpistolns therein mounted between pairs of revolving disks, a stationarycore having suitable depressions on its surface between the disks andextending through said disks, a shaft extendin through said stationarycore, and connecte to said dlsks, an auxiliary' shaft, a pair ofrevolving" abutments thereon'engaging the depressions in said core, andhaving recesses to receive the said shafts.-

7. In a rotary engine, the combination of a casing, a main shaft, a pairof pistons pistons, and gearing between mounted between circular diskson said'shaft,

a pair of abutments revolving in connection with said pistons and disks,saidrevolving abutments having reowses adapted to receive the saidpistons; a core between said disks, having depressions on its surface Iadapted to engage the revolving abutments and held stationary by contacttherewith, said abutme'nts alternately engaging the said depressions. I

. 8. In a rotary engine, the combination of a casing, a main shaft, aplurality of pistons mounted between pairs of'circular disks on saidshaft, a plurality of abutments one for and revolving in connection withsaid pistons, an auxiliary shaft carrying said abutbeing'heldstationarybfcontact with said abutments, I 9. The combination in arotary engine, of a casing, a

lower (portion of the said casing, a main shaftexten ing thro h saidcasing and connected to said disks, a pair of abutments revolving inconnection with said. pistons, an 3 auxiliary shaft. carrying saidabutments, gearing between said shafts, said revolving abutments havingrecesses on their surfaces to receive the said pistons as they rotate,and

a stationary core mounted on the main shaft 40 and eigtending betweensaid disks, andhaving depressions on itssurface engaged by the, revolvng abutments, said pistons operating alternately, Y

In testimony that I claim the foregoingas 5 two witnesses;

- HARRY PAUL MoCANN.

Witnesses:

HARRY D. REIs'sER, FRED. A; PAWSEY.

my own, 'I affix my' signature in presence of pgir of pistons mountedbetween 30 circular dis adapted to [revolve the

